Permanently mounted motor vehicle jack



A. L. FUSTER July 21, 1953 PERMANENTLY MOUNTED MOTOR VEHICLE JACK 3 Sheets-Sheet 1 Filed Nov. 16, 1949 INVENTOR. q 72207:(OLE/Later m mgawf.

ATTDRN EYE July 21,-1953' FUSTER 2,646,250

' PERMANENTLY MOUNTED MOTOR VEHICLE JACK Filed Nov. 16, 1949 5 Sheets-Sheet 2 i INVENTOR.

flmani p LFuster ATTD RN EYB July A FUSTER PERMANENTLY MOUNTED MOTOR VEHICLE JACK Filed Nov. 16. 1949 s Sheets-Sheet '5 INVENTOR.

. Patented July 21,1953

, PERMANENTLY MOUNTED JACK MOTOR VEHICLE.

I v Antonio L. Fuster, Delano, Calif.

Application November 16, 1949, Serial No. 127,654

This invention relates to hydraulic jacks of the 1 type permanently mounted on motor vehicles with a jack positioned inside of each wheel, and

in particular theinvention relates to a vertically positioned hydraulic jack positionedonthe axles inside of'wheels and controlled and actuated from the rear compartment of the vehicle by a hand actuated pump with tubular connections from the pump to the jacks and with oil tanks and valves Figure 2 is a detail illustrating the handfpump 2 claims. (01. 254-86) and oil tank included in the system with other parts omitted, with parts in elevation, and parts 7 broken'away and shown in section. V

, Figure-3 is a detail illustrating one of the jacks of thesystem mounted on the axle of one of the rear wheels of the vehicle.

Figure 4 is a similar detail showing a'jack mounted on the front axle'adjacent one of the front wheels of the vehicle.

in the said connections. Figure 5 is a vertical section through the hy- The P11113056 Ofthis invention is rp v a draulic jack with parts of the connecting tubes hydraulic system for actuatingpermanently inbr ken away, t stalled mOt OI' vehicle jacks whereby the four 7 fFigure 6 is a, longitudinal section through an Wheels Of the Vehicle yb raised p d t y oil block distributor for preventing more than one I to repair or replace a tire or the like. h jackbeing operated on one side of the system at r Various att mpts av been mad to install one time, said section being taken on line 6-6 of jacks on motor vehicles but with the usual type Fi 1 of hydraulic jack the weight is e cess v and the Figure '7 is a sectional plan through the base of operating instrumentalities associated therewith th d t t d p b i t ken o line 1 are costly and complicated. With this thought in f Figure 2, h v mind this inv nti n n p s a plurality of Figure '8 is a'sectional plan through one of the hydraulic j n di pistons in Cylinders valves of the system being taken on line 88 of ried by the axles of the vehicle positioned inside Figure 9 a V v Of the wheels of the vehicle and hand actuated Figure 9 is a, ertical section through ofie of the pumps positioned in a rear compartment of the valves'of the system. 7 vehicle for actuating the jacks. .7 I Referring now to the drawings wherein like ref- The Object of this invention therefore, to erence characters denote corresponding parts the p ov e an impr n fi Q Vehicle motor vehicle jack system of this invention inj System whereby Jacks Permanently mounted cludes a plurality of cylinders 10, l I, 12, and [3, inside of the wheels of t e. Ve c e readily be hand actuated pumps [4, and I5, oil reservoirs for raised and lowe d y hand actuated pumps pOSitanks a s, and I1, valves, and suitable connections tion'ed in the rear compartment of the vehicle. 7 connecting cylinders t t pump d t 7 Another O j flf invention 15110 provide a The cylinders, as illustrated in Figure 5, are permanently installed hydraulic jack system for formed with tubular casings with heads 1 motor vehicles that may be installed on vehicles 3, threaded n the upper ends and with packing ow In usea glands l9 threaded in the lower ends with packing 1 A fu t ebieet of themventlon 18 t0 provlde 20 secured between the glands I9 and webs 21 in an improved hydraulic jack suitable for motor lowerehds of the cyhhders vehicles which f e eomparatlvely slmple and The cylinders are provided with mounting clips ecenpmieal'eonstruetwn- 22 and 23 for attaching the cylinders to the axles Wlth these and other oblects a advantages m or other parts of the vehicle and these clips may View h invention embodies comparatively light be positioned to correspond with structuraleleweight/tubular cylinders permanently mounted of the v to which the clips a be 7 on axles of a vehicle adjacent the wheels with pisattached a 7 h I 1 e hevmg b p ts on h lower e of the Each cylinder is provided with'a connection :4 piston d thereof Di' 111 the cyllndels and at the upper end and a connection 25 at the lower with oil tanks and hand'pumps positioned in the end. r -vehi'cle and permanentlyconnected to the, cylin- The cylinders are also provided with spring ders for raising and lowering pistons therein. clips 26 which snap over the friction discs 21 on 7 Other features and advantages of the invention the lowerends of piston rods 28 for holding the will appear'from the description taken in connec- P r and p n 29 On the inner ends. of tion with the drawings wherein n the rods, upwardly in the cylinders, as in the posi- Figure l is adiagrammatic view illustrating the 7 tion illustrated in full line in Figure 5- layout of the motor vehicle hydraulic jack system. e lower e o the piston rods a p ov ded with threaded studs 30, and base plates 3| with ,tank It through the connection 3 recesses 32 therein are secured on the studs by nuts 33.

With the cylinders permanently mounted on the chassis or axles of a vehicle the pistons with the base plates 3! remain in the upward position as illustrated in Figure 5 and when it is desired to use the jack fluid under pressure is supplied through the upper end of the cylinder to the port 26 whereby the piston is forced downwardly and the base plate ti on the lower end of the piston rods, moves downward to engage the paving or ground. The dot and dash line shows a piston and base plate as the downward movement is started.

For the purpose of this description, the pump 14 is referred to as the up pump and the pump I5 as the down pump, and when it is desired to raise the right front Wheel of vehicle with the jack: ll the inlet valve t l oi'the up pump I4 is closed, the valve 35 is valve 35 is opened and the inlet valve of down pump is opened. The pump it is then actuated wherebyfiuid is withdrawn from the ad supplied to the pump base From the pump, the fluid is pumped through the connection to the oil block distributor ll; From the block fluid passes through the connections 62 to the upper end of the cylinder through the port 24. Fluid below the piston is carried through the connections id and Q5 to the oil block cistributor it and from this block it through the connectionil and the valve to the tank 5?.

To reverse the movement of the ii lower the right wheel thevalve inlet valve t l is opened and the down I5 is actuated drawing fluid from the to the connection is and discharging tne n through the connection 59 to theblock 55 from the block through the connections M at the lower end of the cylinder ii.

By opening and closing corresponding valves the jack associated with each wheel of the vehicle may be actuated by the up and downpumps to raise and lower the wheels as desired.

As illustrated in Figure 6 the connections such as the connections it that extend from the pump to the oil block are provided with check valves 58 and these connections communicate with a passage 5i that extends to inlet valves suchas the valves 31 and that also communicate through connections such as the connection 35 with the cylinders of the difierent jacksJ In the design illustrated in Figure 6 block it is provided with a transverse passage 52 that connects the block 46 to the left rear wheel jack of the vehicle through a tube i and also to a passage 52; that connects the block to the left front wheel jack of the vehicle. The block is provided with a gauge 54 for indicating the pressure of the fluid.

The base 55 of the pump i5 is similar to the pump i and and base 39 of the pump it and as illustrated in Figure 7 the base 55 is provided with an inlet connection 56 having a threaded socket 5i therein and also a discharge, connection 58 having a threaded socket 59 therein. The passages and '58 communicate with the interior of the pump cylinder l5.

The pumps are provided with operating handles Bil that may be freely positioned in open sockets 'in the ends of levers 6i and the lovers are pivotally connected to connecting rods 52 of pistons of the pumps by pins t3 and also to the base 55 by a link 64 the front end of which is pivotally opened, the r is closed, the

7 41- attached to the lever ti by a pin 65 and to the other two ears as on the base 55 by a pin 61. In the pump it? the passage 55 communicates with. the connection it and the passage 58 with the connection 38, the connection it having a check valve 53 therein.

A typical valve 36 is illustrated in Figures 8 and 9 and these valves are used in the connections 12 an 55 in which they are indicated by the numerals 35 and however, the same valves are used in the connections to all of the jack cylinders. In this design the valve body l8, particularly referring to the valve 36, is provided with side connections is and :5 which communicate with openings es and '56, respectively, in a core ii actuated by handle l2 through a stem It will be understood, however, that any suitable valve may be used.

With the parts arranged in this manner and with the cylinders it and H mounted on the front axle of the vehicle and the cylinders l2 and if} mounted on the rear axle, fluid may be pumped from a tank or tanks positioned in a compartment in the rear of the vehicle to the cylinders, respectively, and as the jacks are relieved fluid passes back to the tanks to the inlet valves is? whiclr'as illustrated in Figure 6 are positioned on the tank body with a valve seat i i pc ioned in the valve body and connected to the interior of the tank through the connection '55. The valves it are provided on the ends of threaded stems with handles it on the outer ends thereof. These valves are connected by the connections ll and '19 to the passages Sl of the oil block distributor.

With the up and down pumps and associated tank" positioned in the rear compartments of t ev vehicle, and with the jacks mounted on the front and rear axles the jack cylinders are connected to the pump and tanks through suitable pipes or tubes extended through the chassis of the vehicle. These connections maybe provided with flexible tubing or hose as indicated by the numeral 83 as flexible connections are required.

It will be understood that modifications may be made in the design and arrangement of the parts without departing from the spirit of the invention.

What is claimed is:

l. In a motor vehicle jack, the combination which comprises a vertically disposed cylinder having mounting clips extended therefrom for attaching the cylinder to an axle of a motor.

vehicle, a piston positioned in the cylinder, a piston rod extend d from the piston and extended from the lower end of the cylinder, a packing I pressure tank to upper and lowe having a threaded st-.d of a less than that oi the piston rod extended from the lower end and positioned to provide a shoulder at the lower end of the piston rod, a friction disc posit: ned on the said threadedstud, a base plate having a reces" in the under suii'ace positioned on the threa s. e threaded stud retain tion and clamping t the shoulder of the l a not on thy said i" c plate in posiuse against ing clips e2 said friction disc "for "retaining the piston .d base plate in elevated positions, a iluid res .re tanli, supply and return conneetim from the r ends of the cylinder, and a pump connected to the said pressure tank.

2. In a v motor vehicle jack the combination which comprises a plurality of vertically disposed cylinders each having a mounting clip extended therefrom for attaching the cylinder to an axle of a motor vehicle, a piston positioned in the cylinder, a'piston rod extended from the piston and extended from the lower end of the cylinder, a packing gland in the lower end of the .cylinder through which the piston rod extends, said piston rod having a threaded stud of a diameter less thanthat of the piston'rod extended from the lower end and positioned to provide a shoulder at the lower end of the piston rod, a friction disc positioned on the said threaded stud, a base plate having a recess in the under surface positioned on the said threaded stud, a' nut on the said threaded stud retaining the base plate in position and clamping the said friction disc against the shoulder ofthe piston rod, spring clips extended from the cylinder and positioned tosnap over the peripheral edge of the said friction disc for retainingthe piston, piston rod and base plate in elevated positions, a pair of fluid pressure tanks, a pump connected to each of said pressure tanks, and connections from the-said pressure tanks to upper and lower ends of the cylinders whereby one of said tanks provides .fluid under pressure for extending the piston rods and b ase plates and the other supplies fluid under pressure forretracting the piston rods and base plates.

ANTONIO L. FUSTER.

References Cited in the file of this patent UNITED STATES PATENTS 

